Yamaha SY99 Owner's Manual page 151

VOICE EDIT MODE
Init Phase (0...127): This determines the initial
phase position from which the selected wave-
form will be re-started when phase sync is on.
The init phase range of 0...127 corresponds to a
range of 0...360 degree starting phase. This set-
ting is effective only when Phase Sync is on.
Phase
Setting
Waveform: The sixteen waveforms that can be
produced by each operator are not modeled after
any "real" instrument but are mathematical
transformations of sinewaves. The following
chart shows the harmonic content of each
waveform. The amplitude of each harmonic
partial is given as a percentage of the funda-
mental.
The -100dB level is exceeded by odd harmonics up
to the 65th harmonic.
140
The -100dB level is exceeded by even harmonics up
Time
to the 392nd harmonic,
The -100dB level is exceeded by odd harmonics up
to the 113th harmonic.
The -100dB level is exceeded by the 2nd harmonic,
and all odd harmonics.
The -100dB
to the 130th harmonic. [4th terms do not exist]
level is exceeded by harmonics up